40189215744 has 88 divisors (see below), whose sum is σ = 119021095520. Its totient is φ = 13396396032.

The previous prime is 40189215733. The next prime is 40189215749. The reversal of 40189215744 is 44751298104.

40189215744 is a `hidden beast` number, since 40 + 18 + 9 + 21 + 574 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40189215744.

It is not an unprimeable number, because it can be changed into a prime (40189215749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699154 + ... + 754449.

Almost surely, 2^40189215744 is an apocalyptic number.

It is an amenable number.

40189215744 is an abundant number, since it is smaller than the sum of its proper divisors (78831879776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40189215744 is a wasteful number, since it uses less digits than its factorization.

40189215744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453632 (or 1453608 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 40189215744 in words is "forty billion, one hundred eighty-nine million, two hundred fifteen thousand, seven hundred forty-four".